9 Electric equipment and instruments (included in this class), namely, switches, time delays, interval and inverse circuits for heating, ventilating and air conditioning apparatus and installations, and systems constructed therefrom for filter monitoring or central control; manually operated or reference variable-dependent circuits, in particular for the reference variables humidity, light, movement, temperature, gas and other variables affecting air quality, and other reference variables in the field of building technology, for the control of heating, ventilating and air conditioning systems; fire protection barriers, fire sensors and data processing equipment therefor, data transmission apparatus, cables and cable networks, and automatic barrier devices to prevent the spread of fire in ventilation ducts; electric drive elements for opening windows and all parts therefor and control devices therefor
Trademark: 79386509
